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#1 2017-08-03 09:45:45

chipmunk
Member
Registered: 2015-11-12
Posts: 23

Can geometry optimisation be done with MCPDFT?

Dear Developers,

I was trying to do optimisation with MCPDFT, but I got errors. The input and output are below. I guess MCPDFT does not support geometry optimisation?

.....

........

&MCPDFT 

&ALASKA

......
                     No automatic utilization of translational and rotational invariance of the energy is employed.
 
 ###############################################################################
 ###############################################################################
 ###                                                                         ###
 ###                                                                         ###
 ###     Somthings wrong in dim. in p2cs                                     ###
 ###                                                                         ###
 ###                                                                         ###
 ###############################################################################
 ###############################################################################

Last edited by chipmunk (2017-10-10 21:07:29)

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#2 2017-10-05 20:19:42

sandx
Member
Registered: 2017-10-05
Posts: 1

Re: Can geometry optimisation be done with MCPDFT?

Hello,

It should work if you specify that numerical gradients should be used.  This is done via:

&ALASKA
NUMERICAL

Analytic gradients are likely to be implemented shortly.

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#3 2017-10-10 15:01:58

chipmunk
Member
Registered: 2015-11-12
Posts: 23

Re: Can geometry optimisation be done with MCPDFT?

sandx wrote:

Hello,

It should work if you specify that numerical gradients should be used.  This is done via:

&ALASKA
NUMERICAL

Analytic gradients are likely to be implemented shortly.


Thank you sandx. I am going to try this.

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#4 2017-10-13 16:26:10

chipmunk
Member
Registered: 2015-11-12
Posts: 23

Re: Can geometry optimisation be done with MCPDFT?

Hello Sandx,

This does not work. So, I should wait for the analytical version. I read the paper recently, and hope that it will be available in OpenMolcas soon.

https://arxiv.org/abs/1709.04985

Update: OpenMolcas 17 is working.

Thank you.

Last edited by chipmunk (2017-10-13 18:14:12)

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